DE60110665T2 - Device for packaging and applying a cosmetic or care product - Google Patents

Description

The The invention relates to the field of devices for packaging and for applying a cosmetic or care product.

The The invention particularly, but not exclusively, relates to Device for packaging and applying lipstick.

It was a big one Number of devices for packaging and applying lipstick proposed.

you can refer, for example, to French patent applications FR-A-2 548 880 and FR-A-2 762 763 and European Patent Application EP-A-0 815 766 to the consignor.

US 5,984,554 describes a device for packaging and applying a product containing volatile solvents. This device comprises a cap internally provided with a low density polyethylene sealing member.

you effort In general, a tight closure of the case when not in use to obtain a good preservation of the convent and in particular the evaporation of volatiles contained in the product Hydrocarbon solvent to avoid.

internally conducted Tests allowed to establish that the cases currently on the market provide sufficient tightness, i. that you can not change the weight of the closed cases after a longer Storage time at a temperature higher than the ambient temperature is, watched.

In spite of This tightness was noted that the preservation of the convent was not optimal in some compositions and that this is on the quality the make-up effect.

aim In particular, the invention is the preservation of the pen to improve.

aim The invention is more general, the preservation of at least one a fleeting Hydrocarbon solvent containing cosmetic or care product to improve the in a packaging and applicator device with a tight seal containing at least two elements, one of which made of plastic, these elements are suitable, relatively to be moved to each other to allow the application of the product.

The Invention achieves this by the fact that the plastic is not polyolefinic is, so this (or these) elements) no significant mass change learns (to experience) when it (s) with the vapors of this solvent in longer Contact is (are) brought.

The Submitting has surprisingly found that the fact that the elements of the device, the vapors exposed to the volatile hydrocarbon solvent (s) contained in the product are made of such or such plastics are allowed to improve the preservation of this product.

To Realization of this invention and implementation of internal comparative Tests, the applicant has found that the preservation of the Product could be improved by a self-minimal absorption the solvent vapors through prevents the existing plastic components of the device becomes.

The Applicants have also found that the present invention allowed when the device has a mechanism for driving the As with a lipstick case, for example Fall is any danger of dimensional change the components of plastic and a malfunction of the Mechanism after absorption of or contained in the product volatile Hydrocarbon solvent in Case of its storage at a relatively high temperature and / or long-term storage (several years). The drive mechanisms A lipstick case includes parts that are accurately moved relative to one another have to and especially sensitive to dimensional changes are.

The invention is especially advantageous when the solvent is from the hydrocarbon oils is selected from 8 to 16 carbon atoms or mixtures thereof, which solvent may be selected from the branched C ₈ -C ₁₆ alkanes and their mixtures, and may consist, for example, of isododecane.

you used for the production of plastic components Non-polyolefin plastics. So you can use materials use, which are selected from the following list: Styrenes, in particular Polystyrenes and their copolymers (SB, SAN, ABS), polyvinyl chlorides and their derivatives, polyacrylic (PMMA), polyoxymethylene (POM), polyamides (PA) and saturated thermoplastic polyesters, especially polyethylene terephthalate (PET).

at an embodiment all consist of plastic components of the device of acrylonitrile-butadiene-styrene (ABS).

If the device has an outer housing, it is advantageously used for the production of this housing ABS or an ABS / SAN copolymer.

If the device has a drive mechanism which is at least comprises two mutually movable components is used advantageously for the production of these components different materials, wherein one of the components of POM and another component of ABS is made.

you In this way it can improve the glide and the production of Squeaking or scratching noises avoid.

At least one of the plastic elements that does not have a significant mass change experienced, can belong to a mechanism for driving the product.

At least one of the plastic elements that does not have a mass change can learn from outside the device substantially not visible.

At least one of the plastic elements that does not have a significant mass change experienced, can be in direct contact with the product.

Further Features and advantages of the present invention will become apparent the following detailed Description of non-limiting embodiments and of the enclosed drawings. In this show:

1 a schematic view of a first example of a lipstick case in an axial section,

2 an exploded schematic view of the drive mechanism of the case of 1 .

3 a schematic view of a second example of a lipstick case in an axial section and

4 a schematic view of a third example of a lipstick case in an axial section.

In the 1 and 2 is a case 1 illustrated according to a first embodiment of the invention.

In this example, the case has 1 an outer casing, which is a body or base 2 , a removable cap 3 and a drive mechanism 4 includes, which is intended to allow the axial movement of a product pin P.

The mechanism 4 has a known construction and consists of the assembly of three elements, namely a socket 5 , a pencil carrier 6 and a shell 7 ,

The socket 5 and the bowl 6 are made of plastic, and the shell 7 includes a sleeve 8th made of metal, with an inner jacket 9 is made of plastic.

The bowl 6 has two diametrically opposed lugs in a known per se 10 designed for this, in two diametrically opposed guide slots 11 the socket 5 to glide.

The ends of the noses 10 come in helical grooves 12 of the inner jacket 9 engaged, allowing a rotational movement of the bushing 5 relative to the shell 7 from an axial movement of the cup 6 is accompanied.

The body 2 has a shaft 13 in the socket 5 enters and with respect to this is blocked in rotation.

To effect the exit of the product pen P, the user turns the envelope 7 concerning the body 2 after putting the cap 3 has decreased.

In 1 For the sake of clarity of the drawing, only the upper end of the product pen P is shown.

For further Details regarding the structure of such a lipstick case is on the French Patent Application FR-A-2 248 880.

In 3 is a lipstick case 1' of the known structure described in the French patent application FR-A-2 762 763, to which reference is advantageously made.

The case 1' has an outer shell that has a body or base 2 ' and a cap 3 ' this includes a drive mechanism 4 ' houses a shell 7 ' , a socket 5 ' and a pen support cup 6 ' includes.

The socket 5 ' will be in front of the body 2 ' made in one piece and includes two diametrically opposed slots 11 ' in which are two diametrically opposed noses 10 ' of the bowl 6 ' can slide.

The case 7 ' includes a metallic outer sleeve 8th' that with an inner jacket 9 ' is occupied, with a helical thread 12 ' is provided.

The way of working is similar to that of the case 1 ,

In 4 is another case 1'' shown.

The construction of this case 1'' is described in European patent application EP-A-0 815 666.

The case 1'' includes an outer case that is a body or base 2 '' and a cap 3 '' includes, where the body 2 '' and the cap 3 '' for example, are made of metal.

The case 1'' includes a drive mechanism 4 '' , the one concerning the body 2 '' fixed unit 5 '' made of plastic, a shell 7 '' that can rotate with respect to this, and a pen support cup 6 '' includes.

The bowl 6 '' is with a threaded rod 20 made of plastic firmly attached to a nut forming element 21 that to unity 5 '' heard, is introduced.

The case 7 ' includes a metallic sleeve 8th'' concerning the body 2 '' movable in rotation but stationary in translation into which an insert 22 made of plastic.

The threaded rod 20 has on its length two diametrically opposite flats, which are not visible in the drawing, since they are to the cutting plane of the 4 are parallel.

The use 22 has two drive surfaces (in the 4 not shown) on the flats of the rod 20 come to rest, that the rotary drive of the shell 7 '' from a rotary motion of the rod 20 accompanied, but this is free, regarding the use 22 to move axially, as the thread of the rod 20 in the element 21 engages.

In this way is the rotation of the rod 20 from an axial movement of the cup 6 '' in the sleeve 8th'' accompanied.

You notice that the cap 3 '' an insert 23 owns that with reliefs 24 is provided.

These come at corresponding grooves of the sleeve 8th'' engaged when the cap 3 '' in its place is to get a tight seal.

at all described embodiments of the invention used one for the production of the components from plastic materials, which was chosen are that they have no significant mass change when they in longer Contact with the fumes of the volatile solvent (s) contained in the product P.

Under volatile solvent is understood in the context of the present invention, a non-aqueous, at Ambient temperature (25 ° C) and under normal atmospheric conditions Pressure (760 mm mercury) liquid Medium, from the skin or the lips in less than an hour can evaporate.

Such a solvent may be selected from the media having a vapor pressure at ambient temperature and normal atmospheric pressure ranging from 10 ^-3 to 300 mmHg (0.13 Pa to 40,000 Pa).

at the described embodiments are the relevant solvents Hydrocarbon oils with 8 to 16 carbon atoms or their mixtures.

Such oils may be selected from the branched C ₈ -C ₁₆ alkanes and their mixtures.

For example, C ₈ -C ₁₄ isoparaffins or isohexyl neopentanoate are used, with isododecane being preferred.

When Example of a commercially available Type of this latter compound can be Permethyl 99A of Company PRESPERSE INC. call.

The Product P contains in the described embodiments between 5 and 90% volatile solvents and preferably at least 20%.

The product P may, for example, have one of the following compositions: Example 1 Isododecane (2,2,4,6,6) pentanethylheptan 20% Phenyl 49% Polyethylene wax (PM 500) 20% Pigments and mother of pearl 11% wherein the proportions given above are proportions by weight.

This lip red is obtained by dispersing the pigments and the mother-of-pearl in the phenyltrimethicone and then adding the wax and heating the whole to 100 ° C. until the wax has completely melted. Then the isododecane is added at 80 ° C. The molten mixture is then poured into a suitable mold to form a pin and then cooled to room temperature. The pen obtained is homogeneous, soft and not fat. He provides a pleasant film on the lips throughout the day, which does not transmit. Example 2 isododecane 20% polyisobutene 41% Polydimethylsiloxane (100 cst) 8th% Polyethylene wax (PM 500) 20% Pigments and mother of pearl 11%

This red lip is obtained as in Example 1. This gives a lip-red, which is easily applied and that after evaporation of isododecane leads to a pleasant film that does not transmit. Example 3 isododecane 35% polyisobutene 18% Polydimethylsiloxane (100 cst) 8th% Polyethylene wax (PM 500) 16.5% Pigments and mother of pearl 11% arachidyl 7.5%

This red lip is obtained as in Example and has the same properties. Example 4 Phase A Hydrogenated polyisobutene 11% Diglyceryl disostearate sold under the name Salacos 42 by the company NISSHIN OIL MILLS 4.86% PVP / eicosene copolymer 5% Antioxidant qsq Phase B Polyethylene wax (PM 400) 10% Phase C titanium oxide 0.28% DC Red No. 7 1.03% FDC yellow No. 6 Al lake 2.19% kaolin 7.50% Phase D Phenyltrimethicone (1000 cSt) 35% Phase E mica 1% Phase F isododecane 22.08% 100% by mass

method

The Particle phase C is ground in phase A using a three-cylinder mill. It then sets the polyethylene wax and heated to 100 ° C until complete resolution of the wax. Then you put the phenyltrimethicone and the mica at 100 ° C to and then isododecane at 80-90 ° C. Then can at 80-85 ° C in suitable Pour molds, to get pins.

In all the described embodiments, the product P contains a non-negligible amount of isododecane, and one selects the plastic components of the cases 1 . 1' and 1'' from thermoplastic non-polyolefin materials.

So one can instead of polypropylene or high density polyethylene, usually be found in the manufacture of the well-known lipstick cases, Styrenes, for example polystyrenes (PS) and their copolymers (SB, SAN, ABS), polyvinyl chlorides and their derivatives, polyacryls (PMMA), Polyoxymethylene (POM), polyamides (PA) and saturated thermoplastic polyesters, in particular polyethylene terephthalate (PET).

From the submitter Experiments have shown that such materials, if during a longer Time Isododecane fighting exposed, in contrast to the polyolefins, such as polypropylene or high density polyethylene, no substantial mass change suffer.

Tests were carried out to form the sleeve, the cup and the inner jacket of the cases 1 and 1' Acrylonitrile-polystyrene (SAN) was used.

These Tests have shown that the mass change after prolonged exposure at isododecane vapor is less than 0.4%.

Furthermore, a case 1'' manufactured by making all plastic components from acrylonitrile-butadiene-styrene (ABS), and the measurements carried out have not allowed to detect a mass change in the weight of the components after prolonged exposure to isododecane vapor.

The The invention is generally applicable to all known lipstick cases.

at those whose outer casing is polypropylene or high density polyethylene, these materials are replaced advantageously by ABS or an ABS / SAN copolymer.

What As regards the drive mechanism, it is advantageous to others To use materials to better movement characteristics, in particular a better glide and a low operating noise too receive.

So can be used to manufacture one of the components of the drive mechanism to use a material other than that used in the manufacture the other constituents of the mechanism, with one of the For example, components of POM and the other components made of ABS.

The Invention allowed to establish that apart from the better Preservation of the product a dimensional stability of the existing plastic Components of the case over a long time even in the case of storage at a relatively high Temperature guaranteed.

comparative Tests allowed to determine that mechanisms that constituents include polyolefin, dimensional changes suffer, which can significantly change the torque to be applied to a cause axial movement of the pin bearing cup, and also can lead to jamming of the mechanism.

Further allows the invention to avoid that the pin due to a Solvent loss dries out, with such dehydration to a reduction its diameter and a detachment from the cup carrying it to lead can; Furthermore The dehydration of the pen is accompanied by a hardening, which is a real one Spreading of the product on the lips prevented.

The Invention is natural not to the described embodiments limited.

Especially the invention is not limited to the case in which the product contained hydrocarbon solvents Isododecane is.

Besides that is the invention is not limited to lipstick cases, but is general Applicable to all packaging and applicator devices in which you want to get a tight seal and where you have ingredients Made of plastic that absorbs the vapors contained in the product Hydrocarbon solvent are exposed.

Claims (12)

Packaging and application device ( 1 ; 1'; 1'' ) having a cosmetic or care product to be applied which contains at least one volatile hydrocarbon solvent, said device having a sealed seal and having at least two elements, at least one of which is made of plastic, said elements being capable of being moved relative to each other to move said element Application of the product, characterized in that one uses for the preparation of all the vapors of the solvent-exposed plastic components of the device nichtpolyolefinkunststoffe, said elements undergo no significant mass changes when they are brought into prolonged contact with the vapors of this solvent. Device according to the preceding claim, characterized characterized in that it forms a case for lip red. Device according to one of the two preceding claims, characterized in that this solvent ausge ausge from the hydrocarbon oils having 8 to 16 carbon atoms or their mixtures is selected. Device according to the preceding claim, characterized in that the solvent is selected from the branched C ₈ -C ₁₆ -alcanes and their mixtures. Device according to the preceding claim, characterized characterized in that the solvent Isododecane is. Device according to one of the preceding claims, characterized characterized in that one consists of the production of plastic Components of the device uses materials that made the following List selected are: styrenes, in particular polystyrenes and their copolymers (SB, SAN, ABS), polyvinyl chlorides and their derivatives, polyacryls (PMMA), Polyoxymethylene (POM), polyamides (PA) and saturated thermoplastic polyesters, in particular polyethylene terephthalate (PET). Device according to one of the preceding claims, characterized characterized in that all plastic components the device consist of acrylonitrile-butadiene-styrene (ABS). Device according to one of the preceding claims, characterized characterized in that it comprises an outer housing and that one for making this case ABS or an ABS / SAN copolymer used. Device according to one of the preceding claims, characterized characterized in that it comprises a drive mechanism which comprises at least two mutually movable components, and that one uses different materials for the production of these components used, with one of the components of POM and another Component is made of ABS. Device according to one of claims 1 to 9, characterized that at least one of these components made of plastic, which no substantial mass change experienced, belongs to a mechanism for driving the product. Device according to one of the preceding claims, characterized characterized in that at least one of these elements is made of plastic, the no significant mass change experienced, from outside the device is not visible. Device according to one of the preceding claims, characterized characterized in that at least one of the elements is made of plastic, the no significant mass change experienced, with the product is in direct contact.